【文章內(nèi)容簡介】
ook, think, came, trying, play Fill in blanks with proper modal verbs. can would could have to should might/may must When it es to saving the earth, people _______ think that big things __________be done. However, many fet that saving the earth begins with small things. For example, You _________ save electricity by turning off the lights when you leave a room. You ____ also use paper or reusable bags instead of plastic bags. In some stores, you now __________ pay for plastic bags. I think this is a great idea. And instead of driving to school or work, you ________ ride your bike or walk. If it’s far, you ________ take the bus. All these small things ______ add up and became big things that _____________ improve the environment. We can’t afford to wait any longer before taking action. Possible answers: may, can’t, can, could, have to, may/might, should ,would, must 隨堂練習(xí) Fill in blanks using proper forms of given words.